Common Core Mathematical Content Standards:
7.EE.3: Solve multi-step real-life and mathematical problems posed with rational numbers in any form.
7.EE.4a: Use variables to represent quantities in a real-world or mathematical problem, and construct simple equations to solve problems by reasoning about quantities.
*Teachers can extend this situation in 7th or 8th grade by graphing the situation or creating a similar situation to compare the two situations. (8.EE.5, 8.EE.8c)
Grades 7, 8